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Filtered Queryedit
If we want to find all cars over $10,000 and also calculate the average price
for those cars,
we can simply use a filtered
query:
GET /cars/transactions/_search?search_type=count { "query" : { "filtered": { "filter": { "range": { "price": { "gte": 10000 } } } } }, "aggs" : { "single_avg_price": { "avg" : { "field" : "price" } } } }
Fundamentally, using a filtered
query is no different from using a match
query, as we discussed in the previous chapter. The query (which happens to include
a filter) returns a certain subset of documents, and the aggregation operates
on those documents.